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chapter 28 - ATI Testing

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Vitamins, minerals, and supplements<br />

HERBAL SUBSTANCE<br />

ADVERSE REACTIONS<br />

AND PRECAUTIONS<br />

st. John’s wort • mild adverse<br />

effects, including<br />

dry mouth,<br />

lightheadedness,<br />

constipation, Gi<br />

symptoms<br />

• skin rash when<br />

exposed to sunlight<br />

saw palmetto • Few adverse<br />

effects; can cause<br />

mild Gi effects<br />

• precaution: Can<br />

decrease psa, the<br />

marker used to<br />

detect prostate<br />

cancer<br />

Valerian • Can cause<br />

drowsiness,<br />

lightheadedness,<br />

depression<br />

• risk of physical<br />

dependence<br />

• precaution: Clients<br />

who have mental<br />

health disorders<br />

should use with<br />

caution<br />

• should be avoided<br />

by pregnant and<br />

lactating women<br />

INTERACTIONS<br />

• Can cause<br />

serotonin syndrome<br />

when combined<br />

with other<br />

antidepressants,<br />

amphetamine, and<br />

cocaine<br />

• decreases<br />

effectiveness of<br />

oral contraceptives,<br />

cyclosporine,<br />

warfarin, digoxin,<br />

calcium channel<br />

blockers, steroids,<br />

HiV protease<br />

inhibitors, and<br />

some cancer<br />

chemotherapy<br />

medications<br />

• possible additive<br />

effects with<br />

finasteride (proscar)<br />

• not known if<br />

valerian potentiates<br />

effects of Cns<br />

depressants<br />

NURSING<br />

ADMINISTR<strong>ATI</strong>ON<br />

• encourage clients<br />

using st. John’s<br />

wort to prevent<br />

prolonged sun<br />

exposure and use<br />

sunscreen.<br />

• Question male<br />

clients about use<br />

before they have<br />

psa tests.<br />

• Warn clients taking<br />

valerian about<br />

possibility of<br />

drowsiness when<br />

operating motor<br />

vehicles and other<br />

equipment.<br />

356 PN PHARMACOLOGY FOR NURSING

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